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Ecology chapter 3

Vocab words chapter 3

Chapter 3 Lesson 1
natural resources Anything naturally occurring in the environment that humans use.
pollution Contamination of the Earth's land, water, or air.
nonpoint source A widely spread source of pollution that is difficult to link to a specific point of origin.
point source Specific source of pollution that can be identified.
environmental science The study of the natural process that occurs in the environment and how humans affect that.
Chapter 3 Lesson 2
Renewable resource A resource that is either always available or is naturally replaced in a relatively short time.
sustainable use The use of a resource in ways that maintain the resource at a certain period of time.
nonrenewable resource A natural resource that is not replaced in a useful time frame
ecological footprint The amount of land and water that individuals use to meet their resource needs and to absorb the wastes that they produce
conservation The practice of using less of a resource so that it can last longer
Chapter 3 Lesson 3
Exponential growth Growth patterns in which individuals in a population reproduce at a constant rate, so that the larger population gets, the faster it grows
Chapter 3 Lesson 4
Clear cutting The process of cutting down all the trees in an area at once
selective cutting The process of cutting down only some tree species in an area
sustainable yield An amount of a renewable resource that can be harvested regularly without reducing the future supply.
fishery An area with a large population of valuable ocean organisms
aquaculture The practice of raising fish and other water-dwelling organisms for food.
Chapter 3 Lesson 5
Biodiversity The total number of different species on earth including those on land in the water and in the air.
Keystone species A species that influences the survival of many other species in an ecosystem.
gene A sequence of DNA that determines a trait and is passed from parent to offspring.
extinction The disappearance of all members of a species on earth.
endangered species A species in danger of becoming extinct in the near future.
threatened species A species that could become endangered in the near future.
habitat destruction The loss of a natural habitat.
habitat fragmentation The breaking into a habitat into smaller, isolated pieces.
poaching Illegal killing or removal of wildlife from their habitat .
captive breeding The mating of animals in a zoo or wildlife preserves .
Created by: arw201198622
Popular Ecology sets




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